Adoption of ASU 2018-12 (Effect of Accounting Adoption to Consolidated Balance Sheets) (Details) - USD ($) $ in Millions	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Reinsurance recoverables	$ 19,030		$ 19,443
Other assets	19,456		18,802
Future contract benefits			38,826
DFEL	5,450		5,052
Other liabilities	11,724		12,021
Total	5,819		5,102	$ 9,331
Retained Earnings [Member]
Total	5,362	$ 4,940	5,924	7,065	$ 6,354	$ 5,196
Accumulated Other Comprehensive Income (Loss) [Member]
Total	(5,104)	$ (3,754)	$ (6,352)	(2,280)	3,315	$ 9,984
Accounting Standards Update 2018-12 [Member]
DAC, VOBA and DSI	6,079						$ 12,104
Reinsurance recoverables	3,038						19,388
Other assets	242
Future contract benefits	(3,932)						42,828
MRBs, net	(4,300)						5,334
DFEL	(3,190)						3,591
Other liabilities	417
Total				9,331
Accounting Standards Update 2018-12 [Member] | Retained Earnings [Member]
Reinsurance recoverables	607
Other assets	242
Future contract benefits	(844)
MRBs, net	(7,956)
Other liabilities	1,678
Total				7,065	6,354
Accounting Standards Update 2018-12 [Member] | Accumulated Other Comprehensive Income (Loss) [Member]
DAC, VOBA and DSI	6,079
Reinsurance recoverables	2,431
Future contract benefits	(3,088)
MRBs, net	3,656
DFEL	(3,190)
Other liabilities	$ (1,261)
Total				$ (2,280)	$ 3,315
Cumulative Effect, Period of Adoption, Adjustment [Member] | Accounting Standards Update 2018-12 [Member]
Total							(1,646)
Cumulative Effect, Period of Adoption, Adjustment [Member] | Accounting Standards Update 2018-12 [Member] | Retained Earnings [Member]
Reinsurance recoverables							607
Future contract benefits							844
Total							(6,273)
Cumulative Effect, Period of Adoption, Adjustment [Member] | Accounting Standards Update 2018-12 [Member] | Accumulated Other Comprehensive Income (Loss) [Member]
Total							$ 4,627